Naya Initiative plays no blue spells, so Hydroblast is live and excellent here, destroying red permanents like Broadside Bombardiers, Fable of the Mirror-Breaker, or Caves of Chaos Adventurer at instant speed. Meltdown sweeps their glut of cheap artifact mana like Chrome Mox and Lotus Petal, slowing down their explosive starts, while Ratchet Bomb offers a delayed answer to a wide board of initiative tokens or Anointed Peacekeeper. Daze is a liability on the draw against a deck this fast and doesn't meaningfully tempo them out, so it comes out for hard answers.